CLASSES, ORDERS, ETC. 91 



(d) Shell fusiform, large, yellowish-brown, glossy; whorls 

 twelve ; mouth oval, pear-shaped, with two very strong plaits on 

 the base of the penultimate whorl, and two or three labial plaits 

 which are distinctly visible through the shell ; umbilicus small ; 

 basal crest slight ; clausilium with a notch on the margin near its 



Fig. 34. Clausilia biplicata. 



base. Height -|-f-ths inch. On beech and ash trees. Moderately 

 distributed, but local. C. laminata 



23. Cochlicopa. Shell oblong or oblong oval, very glossy, 

 transparent ; mouth pear-shaped ; outer lip thickened, not re- 

 flected. 



(a) Shell fusiform, pale yellowish-brown, glossy; whorls 

 seven ; spire produced, blunt ; suture shallow ; mouth pear- 

 shaped, with three or more plications. Length -^ths inch. 

 Among moss and decaying leaves. Moderately common, but 

 local. C. tridens. 91 



(ft) Shell oblong, not so ventricose as C. tridens, yellowish-brown 

 or greenish- white, glossy; whorls five to five and a-half; suture 

 rather deep ; mouth oval, without plaits. Height -^tli 8 inch. 

 Among moss and decaying leaves. Common. C. lubrica^ 



90 v. albinos, entirely white ; v. pellucida, thinner, more transparent, very 

 glossy. 



91 v. crystallina, greenish-white, transparent, glossy. 



92 v. hyalina, greenish- white ; v. fusca, more or less a deep brown colour ; 

 v. lubricoides, smaller, more slender ; v. viridula, 'shaped like v. lubricoides, but 

 greenish- white ; v. ovata, smaller, oval, spire shorter. 



